92617-10-2Relevant academic research and scientific papers
On the Preparation and Chemical Reactivity of 2-Benzopyrylium-4-olate
Sammes, Peter G.,Whitby, Richard J.
, p. 195 - 202 (2007/10/02)
An efficient route to 1-acetoxy-1H-2-benzopyran-4(3H)-one is described.This acetate readily liberates the title compound 2-benzopyrylium-4-olate (3) under thermal or base-catalysed conditions.The 1,3-dipole (3) undergoes cycloadditions with a wide range o
On the Preparation of 2-Benzopyrylium-4-oxide and its Cycloaddition Properties
Sammes, Peter G.,Whitby, Richard J.
, p. 702 - 703 (2007/10/02)
Treatment of 1-acetoxy-1H-2-benzopyran-4-one with either base or heats generates the parent 2-benzopyrylium-4-oxide system which gives intermolecular cycloadducts with a variety of dipolarophiles, including olefins.
